If C(t) = 18.5te O.it measures the concentration, in ng of a drug in a person's 140- ml system t hours after the drug is administerd 120- and the minimum effective concentration is 100- 40 ng 80- ml 60- a) Find the onset time to the nearest hour. b) Find the termination time to the nearest 40- hour. 20- X a) Onset time, to the nearest hour, is hours b) Termination time, to the nearest hour, is hours